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1939 in science
English
1939 en science
French
1939 במדע
HE
Znanost u 1939.
Croatian
1939 a tudományban
Hungarian
Науката во 1939 година
Macedonian
Vitskap i 1939
NN
Vitenskapsåret 1939
NB
1939 na ciência
Portuguese
1939 год в науке
Russian
1939 w nauce
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1934
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1935
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1936
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1937
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1938
1939
1940
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1941
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1942
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1943
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1944
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